冷链是指为保证疫苗从生产企业到接种单位流转过程中的质量而装备的多环节链式冷藏储存、运输设备,包括冷藏车、冷库、冷藏箱、冷藏包等;冷链系统则是指由冷链设备、人员和工作程序三个要素组成的一个系统工程。设备指的是冷链设备;人员是指使用和维护冷链设备并提供服务的管理 Cold chain refers to the multi-link chain refrigerated storage and transportation equipment, including refrigerated trucks, cold storage, freezers, refrigerated bags, etc., which are equipped to ensure the quality of the vaccine during the transfer from the manufacturing enterprise to the inoculation unit. The cold chain system refers to By the cold chain equipment, staff and work processes composed of three elements of a systematic project. Equipment refers to the cold chain equipment; personnel refers to the use and maintenance of cold chain equipment and management of services